Protozoa/Helminths — Flashcards

Flashcard 241: Which stain is used to visualize Trypanosomes?_____

Answer: Giemsa

Flashcard 242: How is Babesiosis (Babesia spp.) transmitted?_____

Answer: Ixodes tick

Flashcard 243: _____ is a CNS protozoal infection caused by Trypanosoma brucei subspecies that is diagnosed by a blood smear.

Answer: African Sleeping Sickness

Flashcard 244: Which subspecies of Trypanosoma brucei is from West Africa?_____

Answer: Trypanosoma brucei gambiense

Flashcard 245: Cryptosporidium is highly resistant to chlorination, therefore _____ is used to remove the parasite from water

Answer: filtration

Flashcard 246: What are the intermediate hosts of Paragonimus westermani?

Answer: 1st: Snails 2nd: Crustaceans (crabs or crayfish)

Flashcard 247: Trichinella spiralis is a helminth commonly found in _____ (food)

Answer: undercooked meat (ie: pork)

Flashcard 248: What is the host of Leishmania braziliensis?_____

Answer: Vertebrates

Flashcard 249: Hypnozoites of Plasmodium vivax and ovale are found in _____

Answer: hepatocytes

Flashcard 250: What are the two major species of human hookworms?

Answer: Ancylostoma duodenale and Necator americanus

Extra: Necator americanus (New World hookworm) is endemic to the Americas (including the Southern US). Ancylostoma duodenale (Old World hookworm) is found in the Eastern Hemisphere (Europe, Middle East, North Africa). Both cause intestinal infection and iron deficiency anemia.